as shown in the in vitro assays and

as shown in the in vitro assays and confirmed in then greenhouse and field tests.

The other eight cultivars were either resistant (30211 , 91/00684 ),
or moderately resistant (30572, 88/00695, 91/00475, 91/0034 4, 30001 and
91/003 13) to CAD.

The study shows that an in vitro screening assay of cassava for resistance to CAD could serve as a convenient preliminary screening technique to
discriminate CAD-resistant from CAD-suscept ible cas-sava cultivars .

The in vitro screening method considerably reduces time and labour in comparison with the current screening techniques of cassava,
which involve field planting,
inoculation and evaluation .